South Park season 12 episodes list:

Episode #1:
Tonsil Trouble (air date: 2008-03-12)

After going in for a routine tonsillectomy, a botched transfusion leaves Cartman afflicted with an incurable disease. When he finds no comfort in his friends and family, how far will he go to find a cure?

While trying to escape her troubles in the secluded mountains near South Park, Britney Spears has a run-in with the boys. Stan and Kyle get swept up in her celebrity as well as the non-stop feeding frenzy that plagues her wherever she goes. The boys must take Britney to the North Pole when they learn the secret behind what makes her so popular.

After watching the intimidating opening ceremonies of the recent Olympic games, Cartman understands that the Chinese are only just days away from invading his homeland. While the rest of the American people are haunted by the memory of a recent tragic event, only Butters will stand with Cartman as he confronts the Chinese.

The boys find a way to make money off an international crisis that requires no talent and very little effort. Cartman convinces the other boys to invite Craig to get in on their latest plan. He knows Craig has just what it takes to make their dream a reality.

Stan realizes he could lose Wendy if he doesn't get on board with the latest fad to hit South Park Elementary. Cartman would rather kill himself than succumb. But, when Stan, Kyle, Kenny and Cartman all realize that Butters is now more popular than they are, they have no choice but to give in to peer pressure.

Butters is sure he’s seen a vampire at school but he can’t get anyone to listen to him. Meanwhile, the Goth Kids are angry and frustrated when the other kids can’t tell the difference between a Goth and a Vampire.